When i playing with the mameCE usually buttons are blocked, i mean, i'm playing 1942 and i'm pressing up and suddenly the plain goes to the top of the screen although i'm not pressing the up button anymore and i can't go down until i press another time up button.I have tried to change the buttons, this pda has a lot of them :) but i can't solve the problem.I have tryed with the MameCE3 and with the megamameCE3 with the same results